diff --git a/src/main/java/com/okexchain/msg/common/Data2Sign.java b/src/main/java/com/okexchain/msg/common/Data2Sign.java
index 377ef30..d6a2ae7 100755
--- a/src/main/java/com/okexchain/msg/common/Data2Sign.java
+++ b/src/main/java/com/okexchain/msg/common/Data2Sign.java
@@ -4,6 +4,7 @@
 import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonPropertyOrder;
 import com.google.gson.annotations.SerializedName;
+import com.okexchain.msg.tx.BoardcastTx;
 import com.okexchain.utils.Utils;
 import org.apache.commons.lang3.builder.ToStringBuilder;
 import org.apache.commons.lang3.builder.ToStringStyle;
@@ -88,16 +89,20 @@ public void setData(Fee fee) {
     @Override
     public String toString() {
         return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
-            .append("account_number", accountNumber)
-            .append("chain_id", chainId)
-            .append("fee", fee)
-            .append("memo", memo)
-            .append("msgs", msgs)
-            .append("sequence", sequence)
-            .toString();
+                .append("account_number", accountNumber)
+                .append("chain_id", chainId)
+                .append("fee", fee)
+                .append("memo", memo)
+                .append("msgs", msgs)
+                .append("sequence", sequence)
+                .toString();
     }
 
     public String toJson() {
         return Utils.serializer.toJson(this);
     }
+
+    public static Data2Sign fromJson(String json) {
+        return Utils.serializer.fromJson(json, Data2Sign.class);
+    }
 }
diff --git a/src/main/java/com/okexchain/msg/tx/UnsignedTx.java b/src/main/java/com/okexchain/msg/tx/UnsignedTx.java
index 002b0df..c1655e2 100644
--- a/src/main/java/com/okexchain/msg/tx/UnsignedTx.java
+++ b/src/main/java/com/okexchain/msg/tx/UnsignedTx.java
@@ -2,6 +2,7 @@
 
 import com.okexchain.msg.common.Signature;
 import com.okexchain.msg.common.TxValue;
+import com.okexchain.msg.common.Data2Sign;
 
 import java.util.ArrayList;
 import java.util.List;
@@ -30,6 +31,7 @@ public BoardcastTx signed(Signature signature) {
         boardcastTx.getTx().setSignatures(signatureList);
         return boardcastTx;
     }
+
     public BoardcastValue sign4gentx(Signature signature) {
         List<Signature> signatureList = new ArrayList<>();
         signatureList.add(signature);
@@ -40,4 +42,18 @@ public BoardcastValue sign4gentx(Signature signature) {
     public String toString() {
         return unsignedTxJson;
     }
+
+
+    public static BoardcastTx genBroadcastTx(String unsignedTxStr, Signature signature) {
+        Data2Sign data = Data2Sign.fromJson(unsignedTxStr);
+
+        TxValue txValue = new TxValue();
+        txValue.setMsgs(data.getMsgs());
+        txValue.setFee(data.getFee());
+        txValue.setMemo(data.getMemo());
+
+        UnsignedTx unsignedTx = new UnsignedTx(txValue, unsignedTxStr);
+
+        return unsignedTx.signed(signature);
+    }
 }
diff --git a/src/main/java/com/okexchain/sample/ColdSign.java b/src/main/java/com/okexchain/sample/ColdSign.java
index f9f340d..c45a899 100644
--- a/src/main/java/com/okexchain/sample/ColdSign.java
+++ b/src/main/java/com/okexchain/sample/ColdSign.java
@@ -19,10 +19,10 @@ public static void main(String[] args) {
         PrivateKey key = new PrivateKey("8145bfb1d3acc216c54490952c994d5e3bce09dd65ae73d0c79f892284f721e7");
 
         MsgSend msg = new MsgSend();
-        msg.init(key.getAddress(), key.getPubKey());
+//        msg.init(key.getAddress(), key.getPubKey());
 
         // or init by account number and sequence number
-        // msg.init(key.getPubKey(), "0", "10");
+        msg.init(key.getPubKey(), "0", "10");
 
         Message messages = msg.produceSendMsg(
                 "okt",
@@ -30,13 +30,16 @@ public static void main(String[] args) {
                 "okexchain1v853tq96n9ghvyxlvqyxyj97589clccrufrkz9");
 
         try {
-            UnsignedTx unsignedTx = msg.getUnsignedTx(messages,"0.01000000", "200000", "okexchain transfer!");
+            UnsignedTx unsignedTx = msg.getUnsignedTx(messages, "0.01000000", "200000", "okexchain transfer!");
 
             Signature signature = MsgBase.signTx(unsignedTx.toString(), key.getPriKey());
 
-            BoardcastTx signedTx = unsignedTx.signed(signature);
+//            BoardcastTx signedTx = unsignedTx.signed(signature);
+            BoardcastTx signedTx = UnsignedTx.genBroadcastTx(unsignedTx.toString(), signature);
+            System.out.println(signedTx.toJson());
 
-            MsgBase.boardcast(signedTx.toJson(), EnvInstance.getEnv().GetRestServerUrl());
+
+//            MsgBase.boardcast(signedTx.toJson(), EnvInstance.getEnv().GetRestServerUrl());
 
         } catch (Exception e) {
             System.out.println("serialize transfer msg failed");